<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<img src="ftp://example.test/img.png">
<img src="http://user:pass@example.test/img.png">
<script>
test(() => {
  // Doing nothing, we just want to check the warnings.
});
</script>
